Alternatives to firenum™
50 alternatives to firenum™ in Calculators. Ones the founder approved come first; the rest are listings in the same category.
Disk Prices
Compare HDD and SSD prices with full specifications and price per terabyte in the US
- Same category
- United States
CalcFence
Free fence calculators for posts, rails, pickets, panels, concrete and installed cost estimates
- Same category
- United States
Should I Grade It?
Free Pokémon card grade checker
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CalculateBraSize
- Same category
Coast FIRE Planner
Find the month you can stop saving for retirement
- Same category
- Canada
Yuanzi Zhiyi
Free Bazi Chart Calculator with True Solar Time and AI Interpretation
- Same category
WorthCay
Free Coast FIRE calculator to track your progress toward financial independence
- Same category
Calxo AI
Free online calculators and unit converters for finance, health, and everyday calculations
- Same category
- Established
Handy Money Tools
Free UK money calculators for tax, mortgages, loans, savings and everyday maths
- Same category
- United Kingdom
UtilHub UK
The useful corner of the internet
- Same category
- United Kingdom
The Concrete Calculator
Free concrete slab cost estimator with material, labor and site prep breakdowns
- Same category
Ohmlark
Electronics calculators for makers
- Same category
EZGrader
Free grading calculator and printable chart for teachers
- Same category
Speedometer.tools
Free online GPS speedometer for your phone
- Same category
Concrete Price Calculator
Estimate concrete quantity and installed price for U.S. projects
- Same category
- United States
Tools Berry
Free online calculators and tools that run entirely in your browser
- Same category
CrunchMyPay
Free pay and money calculators with 2026 tax tables
- Same category
- United States
BaZi Calculator
Free Four Pillars of Destiny chart calculator with true solar time
- Same category
NZ PAYE Calculator 2026/27
Free NZ PAYE calculator for take-home pay, tax, ACC levy, KiwiSaver and student loan deductions
- Same category
- New Zealand
calc84online
Free online Texas Instruments TI 84 Plus CE graphing calculator simulator for algebra, calculus, matrices, and standardized test prep
- Same category
Check My Ring Size
Free ring size checker with three calibration methods and six regional sizing systems
- Same category
- Startup
PaycheckZip.com
2026 paycheck estimates with line-by-line tax breakdowns for every state
- Same category
-
EveryCalc
Free online calculators for money, military, and school decisions that run entirely in your browser
- Same category
VoltReflex
Free online reaction time test that measures your reflex speed in milliseconds
- Same category
- United States
-
CognitiveWP
Free B2B business calculators and planning tools for US businesses
- Same category
- United States
AspectCalc
Free aspect ratio calculator and converter for images, videos and screens
- Same category
How Long How Many Days
Free live countdown timer to any time of day or date
- Same category
R6 Sensitivity Calculator
Free PC hip-fire sensitivity converter between CS2 and Rainbow Six Siege
- Same category
TidyBoss
Free home maintenance tools and guides for homeowners
- Same category
- Startup
- Canada
Where Should I Sell?
Compare fees across 8 marketplaces to see what you'll actually keep when you sell
- Same category
- United States
Metriova
Free marketplace fee calculators for Etsy, eBay and Amazon FBA
- Same category
- Startup
AstroCalcolo
Ascendant calculator for Italy and the world with IANA timezone conversion and historical rules
- Same category
- Italy
TDEE Calculator
Free online calculator to estimate your Total Daily Energy Expenditure and daily calorie needs
- Same category
TidyUse
Free calculators and printable tools for home, garden and everyday money questions
- Same category
-
Ajax Calculator
Instant answers. Zero reloads.
- Same category
PlotYourHome
Know exactly what home you can afford
- Same category
Gainly
Free calculators for Indian financial planning, built on official rates and rules
- Same category
- India
ToolGrid247
Fast, practical calculators, converters and online utilities for work, projects and everyday questions
- Same category
GQ Calc
Fast, transparent material calculators for real projects
- Same category
- United States
Xrateo: Currency Converter
Exchange rates at your fingertips
- Same category
Freedom Calcs
Free Coast FIRE calculator to estimate your retirement savings milestone
- Same category
- Startup
Kairocal
Free Indian brokerage calculator for equity, F&O, commodity and currency trades
- Same category
Owned Outright
Mortgage payoff calculators that start from your loan's current balance
- Same category
TakeHomeDesk
Paycheck, tax and money calculators with formulas and sources
- Same category
- United States
Eerlijk over Thuisbatterijen
Independent calculator to check if a home battery pays for itself in your situation
- Same category
- Netherlands
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Rooofread
Free Canadian housing calculators and Excel templates to compare real costs, commutes and neighbourhood trade-offs
- Same category
- Canada
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Mortgage Calculator for Realtors
Branded mortgage calculator app for realtors and loan officers
- Same category
- United States
Iota-Home
Free mortgage modeling and affordability tools for homebuyers, homeowners, and investors
- Same category
- United States
Generator for House
Independent guide to home backup power with sizing calculator, cost data, and brand comparisons
- Same category
- United States
OvertimePayRate
Free overtime pay calculator for all 50 states and DC with state-specific rules and federal FLSA standards
- Same category