Free calculators that respect your intelligence
Honest formulas you can inspect, rates you can edit, and every benchmark sourced. Built for property investors, e-commerce sellers, freelancers and contractors.
Real Estate Investing
Cap Rate CalculatorFree cap rate calculator for rental property. Enter NOI and property value to ge…Cap Rate Calculator (With Mortgage)Cap rate calculator with mortgage: see cap rate, monthly payment, DSCR, annual c…Cash-on-Cash Return CalculatorFree cash-on-cash return calculator: enter rent, expenses, mortgage payment and …Cash-on-Cash vs Cap RateCash-on-cash vs cap rate explained: definitions, when to use each, and a free si…NOI Calculator (Net Operating Income)Free NOI calculator: build net operating income from gross rent, vacancy, taxes,…Prorated Rent CalculatorFree prorated rent calculator for move-in and move-out: computes partial-month r…Rent vs Sell CalculatorFree rent vs sell calculator: compare net proceeds from selling today against re…Seller Closing Cost Calculator — FloridaFree Florida seller closing cost calculator: documentary stamp tax ($0.70/$100),…Seller Closing Cost Calculator — TexasFree Texas seller closing cost calculator: commission, optional owner's title po…Rental Yield Calculator (UK)Free UK rental yield calculator: enter property price, monthly rent and annual r…FIRPTA Withholding CalculatorFree FIRPTA calculator: estimate the 15% withholding when a foreign owner sells …1031 Exchange CalculatorFree 1031 exchange calculator: estimate realized gain, the federal tax you'd pay…
E-commerce Sellers
Amazon FBA Profit CalculatorFree Amazon FBA profit calculator: enter price, referral fee, FBA fulfillment fe…Etsy Fee CalculatorFree Etsy fee calculator for 2026: listing fee, 6.5% transaction fee, payment pr…eBay Fee Calculator (US)Free eBay fee calculator for US sellers: 13.25% final value fee plus $0.40 per o…eBay Fee Calculator (UK)Free eBay UK fee calculator for business sellers: final value fee on item price …TikTok Shop Fee CalculatorFree TikTok Shop seller fee calculator: enter price and the referral fee rate to…Mercari Fee CalculatorFree Mercari fee calculator: 10% selling fee plus 2.9% + $0.50 payment processin…Poshmark Fee CalculatorFree Poshmark fee calculator: 20% flat fee on sales over $15 ($2.95 flat below).…Walmart Marketplace Fee CalculatorFree Walmart Marketplace fee calculator: referral fees of 6–15% by category, no …
Freelancers & Tax
1099 Tax CalculatorFree 1099 tax calculator for 2026: estimate self-employment tax and federal inco…Self-Employed Tax CalculatorFree self-employment tax calculator: split your 15.3% SE tax into Social Securit…VAT Calculator (UK)Free UK VAT calculator: add 20% VAT to a net price, or strip it out of a gross p…VAT Calculator (Ireland)Free Irish VAT calculator: add or remove 23% standard-rate VAT (or 13.5%, 9%, 4.…VAT Calculator (UAE)Free UAE VAT calculator: add or remove the 5% UAE VAT from any amount, both dire…Mileage Deduction CalculatorFree mileage deduction calculator for 2026: multiply business miles by the IRS s…
Contractors & Builders
Roof Pitch CalculatorFree roof pitch calculator: convert rise/run to degrees, slope multiplier and ac…Deck Material CalculatorFree deck material calculator: enter deck dimensions and board size to estimate …Fence Cost CalculatorFree fence cost estimator: enter fence length and prices to count posts, rails a…Concrete Bag CalculatorFree concrete bag calculator: enter slab dimensions and get cubic feet, cubic ya…
Beauty Professionals
Salon Pricing CalculatorFree salon pricing calculator for owners and stylists: turn service time, target…Hair Color Mixing CalculatorFree hair color mixing calculator: enter total grams needed and your color-to-de…Lash Extension Pricing CalculatorFree lash pricing calculator for lash artists: price full sets and fills from ap…