Free Online Calculators
Free online calculators for everyday life and business: salary, loans, electricity prices, working days, compound interest, percentages and more. Everything runs instantly in your browser - no account or sign-up needed.
29 calculators
US Stock Market Risk Monitor
Live US market risk regime monitor. Tracks 9 market indicators - 6 tactical components plus 3 macro signals - and shows a composite 0-100 risk score, recalculated about every 10 minutes.
Home battery payback calculator
Work out with the last 12 months' real electricity prices how much a home battery would save a year and whether it pays for itself before its warranty ends.
Electricity bill calculator
Work out what electricity costs a year with network fees, taxes and VAT, and see whether the spot price or a fixed price would have been cheaper.
Electricity Price Today - Nord Pool
Live Nord Pool spot prices for Estonia - find the cheapest hours and decide when to run your appliances.
Absence Pay Deduction
Calculate how much is deducted from gross pay for hours of unpaid absence.
Salary and Tax Calculator
Calculate net salary from gross salary or the other way round, with all Estonian payroll taxes and the total employer cost.
Geographic Arbitrage
Compare how much of the same income is left in 37 European countries. For remote workers and people who are moving: see where your income goes furthest.
VAT Calculator
Add VAT to a net price or remove it from a gross price - any rate, instant results.
Inflation and Purchasing Power Calculator
Calculate how much inflation has reduced the purchasing power of money and what your salary should be today to buy the same as before.
Vacation Days Optimizer
Plan your leave so that vacation days, public holidays and weekends add up to the longest possible time off. Three plans with three goals.
Working Days Calculator
Calculate working days, public holidays, and shortened workdays for any period.
Currency Converter
Convert between major currencies using official European Central Bank daily rates.
Compound Interest Calculator
See how your savings or investment grow over time with compounding interest.
Percentage Calculator
What percent one number is of another, how much X% of a number is, and how big a change is. Fill in two fields and the calculator works out the third.
Profit Margin Calculator
Calculate profit margin and markup, find the price for a target margin or the highest cost you can afford.
Break-Even Calculator
Find the sales volume and revenue that cover all your costs, and how much you need to reach the profit you want.
RF Creditor Reference
Generate or check RF creditor references from an invoice number, in bulk if needed, and create payment QR codes for SEPA transfers.
CPM, RPM - Earnings Calculator
Calculate YouTube and website ad revenue from views and RPM, find your RPM or the number of views you need.
Swiss QR-bill
Create the payment part and receipt of a Swiss QR-bill as a PDF: IBAN or QR-IBAN, RF or QR reference, amount in francs or euros.
Reference number calculator
Make or check an Estonian or Finnish reference number (7-3-1), a Belgian structured communication or a Slovenian SI reference.
Virtual barcode
Make the virtual barcode (virtuaaliviivakoodi) and bank barcode of a Finnish invoice from the IBAN, amount and reference, or read an existing code.
Affiliate Commission Calculator
Calculate the commission you earn from affiliate links, the revenue needed to reach an income goal, or your actual commission rate.
Stripe Fee Calculator
Calculate exact Stripe processing fees and net payout for any transaction amount.
PayPal Fee Calculator
Find out how much PayPal takes from each payment and what you actually receive.
Loan Amortization Calculator
Generate a full amortization schedule showing monthly payments, interest, and principal.
Leasing Calculator
Work out the monthly payment on a lease, and what the balloon at the end really costs you.
Concrete Calculator
Quickly calculate how much concrete you need for a slab, footing, column, or round post. Enter dimensions, set quantity and waste margin - get the result in m³ and litres instantly.
Area Calculator
Calculate area in square metres for rectangles, triangles, circles, walls, and rooms. Subtract windows and doors to get the net area for painting, tiling, or insulation.
Salary ↔ Hourly Calculator
Calculate the hourly rate from an annual or monthly salary, and the monthly or annual salary from an hourly rate.
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