To estimate LTC/DOGE merged mining profitability, calculate the daily LTC and DOGE amounts, convert each into the same fiat currency, and add them together. Then subtract electricity, any additional hosting charges, applicable pool fees not already deducted, and other operating costs once. Use the same operating period for both revenue and costs. The result is an operating estimate before hardware cost recovery and financing.
What an LTC/DOGE Merged Mining Calculator Actually Estimates
A Litecoin (LTC) mining calculator that also reports Dogecoin (DOGE) rewards is estimating two separate income streams produced by the same Scrypt hashrate. It is not estimating net profit. The output typically shown—daily LTC and daily DOGE at a given hashrate, network difficulty, and price—reflects a projected mining reward before electricity, hosting, and other operating costs are applied. Understanding this distinction is the starting point for using any such calculator correctly, whether it is ViaBTC's LTC/DOGE profit calculator or a manually built spreadsheet.
This article explains how LTC/DOGE merged mining works mechanically, what inputs a calculator needs, how to combine LTC and DOGE revenue without double-counting costs, and why the DOGE component can remain variable even when a miner chooses PPS+ for LTC.
How LTC/DOGE Merged Mining Works
Litecoin and Dogecoin both use the Scrypt proof-of-work algorithm. Dogecoin supports Auxiliary Proof of Work (AuxPoW), a mechanism that allows work performed for a parent chain to be submitted to Dogecoin together with the required auxiliary proof, without the miner running separate Dogecoin mining hardware or configuring a second connection.
In practice, this means a Scrypt ASIC pointed at an LTC pool that supports Dogecoin merged mining does not split its hashrate between the two chains. The full hashrate is applied to Scrypt proof-of-work; the pool determines, using AuxPoW, whether a given result also qualifies as a valid Dogecoin block. Because Dogecoin's block target is generally easier to satisfy than Litecoin's, a hash can qualify for a DOGE block without simultaneously qualifying for an LTC block. This is why LTC and DOGE rewards must be modeled as two distinct, independently timed income streams rather than as a single combined hashrate calculation (ViaBTC).
Litecoin's consensus rules set a 150-second (2.5-minute) target block spacing, a difficulty adjustment interval of 2,016 blocks—targeting approximately 3.5 days—and an 840,000-block halving interval (Litecoin Core). Dogecoin targets a one-minute block interval and, from block 600,000 onward, pays a fixed 10,000 DOGE block subsidy rather than a halving schedule (Dogecoin Core FAQ). Both chains adjust mining difficulty; those adjustments do not change their target block spacing or subsidy schedules. LTC’s block subsidy halves at the scheduled block heights, while DOGE’s subsidy remains fixed at 10,000 DOGE per block under the current rules. Actual block intervals vary from their targets.
Inputs to Gather Before Calculating
A usable profitability estimate depends on a small set of inputs, each of which should be dated and sourced explicitly:
- Hashrate to be modeled (the miner's rated or pool-reported hashrate, stated as such).
- Expected operating hours or uptime over the modeled period. Note whether the hashrate figure already includes downtime.
- Wall power draw of the hardware, ideally measured rather than assumed.
- Local electricity price, in the applicable currency per kWh.
- Current LTC and DOGE network difficulty.
- Current LTC and DOGE prices, recorded with a timestamp.
- The pool's payout method for LTC (for example PPS+ or PPLNS) and its stated fee rate.
- The pool's payout method for the merged-mined coin, which may differ from the LTC method.
Because difficulty and price change continuously, a calculator result is only valid for the assumptions entered at that moment. Refreshing these inputs periodically—rather than relying on a single historical estimate—is standard practice for planning purposes.
Calculating Combined LTC and DOGE Revenue
A sound calculation keeps LTC and DOGE as separate line items until the final conversion step:
Daily gross revenue (fiat/day)
= [LTC earned per day × LTC price (fiat/LTC)]
+ [DOGE earned per day × DOGE price (fiat/DOGE)]
Use the same measurement window and consistent assumptions for both coin amounts, including effective hashrate, uptime, each chain’s difficulty, and whether pool fees have already been deducted. Taking both estimates from one calculator can simplify this check, but it is not a requirement: figures from different sources can be combined if their assumptions align. Do not mix theoretical projections with actual credited earnings without explaining the difference.
ViaBTC's LTC calculator, for example, takes price, difficulty, PPS fee rate, and hashrate as inputs and returns separate estimated daily amounts for LTC and for merged-mined coins including DOGE. Because these are calculator projections rather than confirmed pool earnings, they should be labeled as estimates when used in any downstream financial planning.
Calculating Electricity Cost
Electricity is typically the largest recurring operating cost for a self-hosted miner, and it should be calculated independently of the revenue estimate:
Daily electricity use (kWh/day) = wall power (kW) × operating hours per day
Daily electricity cost (fiat/day) = daily electricity use × electricity price (fiat/kWh)
As an illustrative example using a Scrypt ASIC's published specifications rather than a profitability claim: Bitmain lists the Antminer L9 at a typical 16 GH/s hashrate and 3,360 W wall power under stated test conditions, noting that actual figures can vary (Bitmain). At continuous 24-hour operation:
Daily electricity use = 3.360 kW × 24 h = 80.64 kWh/day
Daily electricity cost = 80.64 kWh/day × $0.08/kWh = $6.45/day
The $0.08/kWh rate here is an assumed scenario value, not a market average, and the resulting figure excludes hosting fees, cooling infrastructure, networking equipment, maintenance, and hardware depreciation. Any complete cost model should account for these separately rather than treating electricity as the sole operating expense.
Avoiding Double-Counting Pool Fees and Costs
A frequent modeling error is subtracting a pool fee that has already been deducted from the earnings figure being used. If the LTC and DOGE amounts entered into the revenue calculation come from a pool's displayed estimate or from actual credited earnings, and that figure already reflects the pool's fee, the fee should not be subtracted again in the cost section. Fees, electricity, hosting, and other costs should each be counted exactly once, and the source of each revenue figure should be checked to confirm what has already been deducted before building a combined operating-result calculation:
Daily operating result (fiat/day)
= daily gross revenue
− electricity cost not already included in hosting
− hosting cost (if applicable)
− other operating costs not already reflected in revenue
If an all-inclusive hosting charge already covers electricity or cooling, use that charge instead of separately deducting the same included costs. If you deduct electricity separately, include only the remaining hosting charges in the hosting line.
This figure represents an operating result before hardware cost recovery, not a final net-profit calculation, since it does not include equipment purchase cost, financing, or depreciation.
Worked Example: From Coin Earnings to Daily Operating Result
The following values are hypothetical and illustrate the calculation only; they are not current prices or an estimate of what an L9 will earn. Assume 24 hours of operation and that the daily coin amounts already reflect applicable pool fees.
| Item | Assumption or calculation | Daily value |
|---|---|---|
| LTC revenue | 0.02 LTC × $100/LTC | $2.00 |
| DOGE revenue | 100 DOGE × $0.10/DOGE | $10.00 |
| Combined revenue after applicable pool fees | $2.00 + $10.00 | $12.00 |
| Miner electricity | 3.360 kW × 24 h × $0.08/kWh | $6.45 |
| Additional operating costs | Assumed maintenance allowance; no hosting or additional site energy costs in this example | $1.00 |
| Daily operating result | $12.00 − $6.4512 − $1.00, rounded | $4.55 |
Pool fees are not subtracted again because they are already reflected in the assumed coin amounts. This example covers LTC and DOGE only and excludes hardware cost recovery, financing, and depreciation. Replace the assumptions with your own estimates and include any additional costs that apply to your setup.
Why an LTC Payout Method Does Not Fix DOGE Earnings
One of the more consequential details for a merged-mining calculator concerns payout method interaction. On ViaBTC, LTC miners using either PPS+ or PPLNS are eligible to receive merged-mining rewards for listed coins, which currently include DOGE, BELLS, PEP, and DINGO (ViaBTC Help Center). However, the DOGE component itself is distributed under PPLNS, regardless of whether the miner has selected PPS+ for LTC (ViaBTC merged-mining tutorial).
For LTC, PPS+ pays the block-subsidy component for valid shares independently of whether the pool finds a block, reducing exposure to pool luck for that component. The transaction-fee component is still distributed under PPLNS. Total LTC earnings can change with effective hashrate, network difficulty, the subsidy, and transaction-fee income; PPS+ does not lock in a daily return (ViaBTC payment-method guide). DOGE income remains subject to the pool’s DOGE block results and the miner’s contribution in the applicable PPLNS window.
ViaBTC also credits DOGE merged-mining earnings to the account every two hours, a settlement schedule that is separate from any on-chain withdrawal timing. A calculator's daily DOGE estimate is a projection based on current difficulty and hashrate; actual credited earnings depend on the pool's DOGE block results and the miner’s share contribution in the applicable PPLNS window (ViaBTC merged-mining tutorial).
A Manual Formula, Used With Care
For readers who want to understand the relationship between hashrate, difficulty, and expected reward rather than rely solely on a pool tool, a simplified theoretical model is:
Expected coins per day ≈ [H × 86,400] ÷ [D × 2^32] × block subsidy
Where H is hashrate in hashes per second, D is the relevant network difficulty, and 2^32 is the conventional work factor used in difficulty-based expected-work calculations. The factor 86,400 represents the seconds in a full day. If H represents hashrate while the miner is running, replace 86,400 with the expected operating seconds per day when allowing for downtime. If H is already an effective average over the entire day, including downtime, keep 86,400 and do not apply another uptime reduction. Use the same operating period for the electricity calculation. Applied separately to LTC (using the LTC block subsidy) and to DOGE (using its 10,000 DOGE block subsidy), this produces a theoretical block-subsidy estimate only. It does not account for the pool's actual block-finding luck, PPLNS share-window effects, rejected or stale shares, payout fees, transaction fees, downtime unless incorporated as described above, or difficulty changes during the modeled period. It should be treated as an educational approximation rather than an expected payout figure.
Keeping the Estimate Current
Because LTC and DOGE difficulty adjust independently, and because both coins' prices move continuously, a profitability estimate has a limited shelf life. Reasonable practice is to re-enter current price and difficulty values before making any operating decision, and to compare projected figures against actual credited earnings over time rather than treating a single calculator run as a forecast of future results.
FAQ
Does merged mining require splitting hashrate between LTC and DOGE?
No. A Scrypt ASIC directed at an LTC pool that supports Dogecoin merged mining applies its full hashrate to Scrypt proof-of-work; the pool uses AuxPoW to determine whether a result also qualifies as a valid DOGE block, without a separate DOGE configuration.
If I select PPS+ for LTC, is my DOGE income also fixed?
No. On ViaBTC, DOGE merged-mining rewards are distributed under PPLNS even when the LTC payout method is PPS+, so DOGE income can still vary with pool block results and your contribution in the applicable share window. PPS+ also does not guarantee a fixed total daily LTC income.
Does a calculator's displayed daily amount equal net profit?
No. It typically represents a projected mining revenue estimate based on entered hashrate, difficulty, and price. Electricity, additional hosting charges, pool fees not already reflected in the figure, and other operating costs must be deducted once to reach an operating result. If hosting includes electricity, do not deduct that electricity again.
Should I subtract the pool fee after using a pool calculator?
Only if the displayed estimate does not already reflect that fee. Check the calculator's documentation for whether the fee rate entered is already deducted from the shown coin amounts before subtracting it again.
Why do I need separate LTC and DOGE price inputs?
LTC and DOGE are earned in different quantities and priced independently. Converting each coin using its own price, recorded at the same timestamp, avoids distorting the combined revenue figure.
References
- ViaBTC, "How to Start Mining LTC and Receive DOGE Through Merge Mining," https://www.viabtc.com/en/blog/Mining-how-to-start-mining-ltc-and-receive-doge-through-merge-mining-769?category=0
- ViaBTC Help Center, "What is Merged Mining," https://support.viabtc.com/hc/en-us/articles/7207416775951-What-is-Merged-Mining
- Litecoin Core, chainparams.cpp
- Dogecoin Core, FAQ.md
- Bitmain, "Antminer L9 Specifications," https://support.bitmain.com/hc/en-us/articles/33850555425305-L9-Specifications
- ViaBTC Help Center, "LTC Merged Mining Coins Mining Tutorial," https://support.viabtc.com/hc/en-us/articles/11477430615439-LTC-Merged-Mining-Coins-Mining-Tutorial
- ViaBTC Help Center, "How to Choose the Optimal Payment Method (PPS+, PPLNS)?"