2152 tools and growing. Search, filter, and find your next favorite SaaS — ranked by the community.
OfferVerdict
Compare discounts, free shipping, and bundles by projected contribution profit before you launch.
Peptide Calculator
Free peptide calculator for concentration, dose volume, U-100 syringe units, and reverse unit-to-mcg checks. Transparent formulas and instant results.
Clear HVAC Costs
Check whether an HVAC contractor bid is reasonable. Review price context, equipment, sizing, ductwork, permits, startup, warranty, and hidden scope.
MarginPilot
MarginPilot calculates a defensible freelance project price, risk reserve, margin leak, and payment schedule in your browser.
Astrology Geeks
Free birth chart, Saturn Return & synastry calculators plus AI Astrologer chat and personalized reports.
CalcAhead
Free online calculators with formula explanations and worked examples
Herramientas Web
171 free browser tools for PDFs, images, text, calculators and developer tasks. Spanish and English. No sign-up or file uploads.
The Calc Library
A free library of fast, accurate online calculators for finance, health, selling online, and everyday math. Every tool explains the formula behind the result.
Revenue Operator Free Tools
11 free calculators for selling digital products: fees, pricing, sales goals, headlines, launch plans and policies.
KrokFin
KrokFin brings together everything an investor needs: market news with explanations, free calculators, investing basics, broker reviews and Krokfolio, a financi
Cubic Feet Calculator
Calculate cubic feet, cubic yards, cubic metres, and litres from three dimensions, each with its own selectable unit.
CalculatorQueen A1C Calculator
Convert A1C percent and estimated average glucose in mg/dL or mmol/L using the ADAG relationship.
How Long Will My Money Last Calculator
Estimate how long savings may last under a level monthly withdrawal and constant nominal return, with target-duration and timing comparisons.
Build Quantities
Free construction calculators with metric and imperial units, visible formulas, worked examples, and project-specific assumptions.
Instica Etsy Fee Calculator
Estimate Etsy seller fees, net proceeds, and profit before listing an item.
Pay Raise Calculator
See your new pay after any raise
UAE Leave Salary Calculator
Annual leave days earned and cash value of unused leave from basic salary and dates (Article 29 basis on page).
ToolCabana
Over 450 free online tools for PDFs, images, text, code, calculators and conversions. Most run right in your browser. No sign-up.