Alternatives to Period Tools
50 alternatives to Period Tools in Calculators. Ones the founder approved come first; the rest are listings in the same category.
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
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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
Lunara
Free natal chart calculator and astrology tools powered by Swiss Ephemeris
- Same category
- Spain
Clockbeam
Free online digital clock with seconds, timer, stopwatch, and alarm
- Same category
CalculCalories
Free calorie calculator with TDEE, BMR, macros and nutrition tools based on published formulas
- Same category
Etsy Tariff Calculator
Free browser-based calculator showing every 2026 Etsy fee on a listing, including DDP tariff charges
- Same category
Kilohour
Free power station runtime calculator for portable battery systems
- Same category
Quotelyo
Free browser-based financial calculators for planning, savings, loans and investing
- Same category
PayCalcTools
Free pay calculators for workers and employers
- Same category
Bracketree
Free tournament bracket generator for printing and sharing
- Same category
BRI Calculator
Calculate your Body Roundness Index instantly. Free, Fast, and Revealing.
- Same category
-
RoadTax-Calculator.my
Free Malaysia road tax calculator with 2026 JPJ rates
- Same category
- Malaysia
2-Cycle Oil Mix Calculator
Free calculator for 2-stroke oil and gas mix ratios
- Same category
ML to Grams Converter
Free density-based kitchen calculator to convert milliliters to grams instantly
- Same category
Chronological Age Calculator
Free online calculator for exact age in years, months and days
- Same category
AFT Calculator
Calculate your Army Fitness Test scores instantly with official 2025 standards
- Same category
Peptide Calculator
Free transparent peptide calculator for reconstitution, dose, and U-100 syringe unit conversions
- Same category
- China
ProRataWise
Pro rata calculator for insurance premiums
- Same category
Productivity Calculator
Daily score tool for measuring productive time and planning your workday
- Same category
AI Price Calculator
Compare subscription budgets, API token costs and the value of time saved
- Same category
Garage Heat Lab
Free garage heater sizing calculator using garage dimensions, insulation, and winter temperature
- Same category
- United States
MedDebt Calculator
Free debt-planning simulator for medical students, residents, and physicians comparing PSLF, refinancing, and aggressive payoff strategies
- Same category
Swim Converter
Free NCAA-factor swim time converter for SCY, SCM and LCM pools
- Same category
Canopio
Etsy fee calculator showing true profit after all fees including Offsite Ads
- Same category
- Startup
- Japan
HDDHunt
Compare hard drive and SSD prices sorted by cost per terabyte
- Same category
Roth IRA Calculator
Project retirement savings in a Roth IRA versus a simplified taxable account
- Same category
Numhoros
Numerology behavioral analysis calculator for self-awareness
- Same category
- India
Marketing-Rechner
Free marketing calculators for ROI, ROAS, customer lifetime value and profitability metrics
- Same category
- Established
- Switzerland
BaziCalculator.ai
Free Four Pillars chart and analysis with auditable calculation and optional AI-powered readings
- Same category
WowSleepCalculator
Free calculators for sleep, mental wellbeing, recovery, fitness, nutrition and healthy living
- Same category
OnePageParty
Free party calculators, checklists, and printables for any occasion
- Same category
-
Bike Size Charts
Free bicycle size calculator and chart comparison tool
- Same category
StepKcal
Calorie targets that match your real activity
- Same category