COINVAC

Crypto Tools & Calculators

Free, practical calculators for digital finance — value your portfolio, project staking rewards, estimate crypto tax, measure a trade's profit and loss, model dollar-cost averaging, and cost out Bitcoin mining.

Crypto Portfolio Calculator

Value your whole portfolio at once — per-coin value, gain, and return from each holding's amount, buy price, and current price, plus your total profit, ROI, and allocation across assets

Staking Rewards Calculator

Estimate the passive yield on staked coins from your amount, APR, and duration, with simple or daily, weekly, or monthly compounding — the coins earned and their value in fiat

Crypto Tax Calculator

Estimate the tax on your disposals — split short- and long-term gains by holding period, apply your rates, offset losses, and see the net gain and the tax you might owe

Crypto Profit / Loss Calculator

Work out the realized profit or loss on a trade from your buy price, sell price, and quantity — including trading fees — plus your ROI and the break-even sell price that leaves you flat

Crypto DCA Calculator

Model dollar-cost averaging by investing a fixed amount across a series of prices — total coins, your blended average cost, and the current value, profit, and ROI at today's price

Bitcoin Mining Calculator

Estimate mining profitability from your hashrate, network difficulty, block reward, power draw, and electricity rate — the daily BTC mined, revenue, power cost, and net profit

Coin Collection Value Tracker

List every coin in your collection with its quantity and your estimated per-coin value to see a running total, each coin's extended value, and its share of the whole collection

Coin Grading Scale Guide

Look up any Sheldon-scale grade from 1 to 70 and see its plain-language condition tier — Poor through Mint State — plus the full reference table used by PCGS and NGC

Coin Melt Value Calculator

Estimate a coin's raw metal value: weight × purity converts to pure troy ounces, priced at gold, silver, platinum, or palladium spot — with an editable, dated reference spot price you can override

Coin Storage & Holder Sizer

Enter a coin's diameter and how many you have to get a recommended 2x2 flip/holder size and the closest standard coin tube, plus how many tubes you'll need

Mintage-Rarity Estimator

Combine a coin's original mintage with an estimated survival rate to get a rough surviving-population figure and a plain-language rarity band, from Common to Extremely Rare

Silver-vs-Face-Value Calculator

Check whether a coin's silver content is worth more than its stamped face value — the classic "junk silver" question — with presets for common pre-1965 U.S. denominations