What You Can Do Here
Shansu Tools provides practical web utilities for common day-to-day tasks: preparing ID photos, editing images, converting PDF files, estimating daily calories, calculating BMI, estimating mortgage payments, and computing date differences. Each tool is built to be fast and lightweight so you can use it immediately from desktop or mobile.
We focus on clear output and low friction: no signup wall, no long setup flow, and no unnecessary forms. For most workflows, your files stay local in the browser instead of being uploaded to a remote processing queue. This design helps reduce waiting time and also improves privacy.
Install as an app: Open any tool, then use your browser’s Install app or Add to Home Screen option (e.g. Chrome menu or Safari Share) to add it to your home screen or launcher for quicker access.
Image & Document Tools
- Fast Photo Editor Compress, resize, and convert images. Includes US passport, visa, and Green Card photo presets.
- PDF Converter Merge, split, compress, and convert PDF files in your browser.
- TXT to EPUB Convert plain text to EPUB3 with encoding options and chapter breaks. Runs locally in your browser.
Health Calculators
- TDEE Calculator & Maintenance Calorie Calculator Estimate BMR, TDEE, daily maintenance calories, cutting calories, or lean-gain targets.
- Weight Loss Calorie Calculator Set a calorie deficit plan with target calories, goal date estimates, and 4-week milestones.
- Macro Calculator Get daily protein, fat, and carb targets for cutting, maintenance, or bulking from your TDEE.
- Macro Calculator for Bodybuilders Plan contest prep, recomp, or lean-gain macros with training-day and rest-day targets.
- Intermittent Fasting Meal Planner Build fasting windows and split calories, protein, fat, and carbs into 2 to 4 meals.
- Body Fat Calculator (Navy Method) Estimate body fat percentage, lean body mass, and fat mass from tape measurements.
- BMI Calculator Calculate Body Mass Index and standard weight category with metric or imperial inputs.
- Daily Water Intake Calculator Calculate daily recommended fluid goal with interactive water cup progress and schedule.
- One Rep Max (1RM) Calculator Estimate max lifting capacity and generate percentage load tables for strength training.
- Pregnancy Due Date Calculator Estimate due date, gestational age, and 40-week milestone timeline from LMP or conception.
- Keto Macro Calculator Get daily net carb, protein, and fat targets for ketogenic weight loss, maintenance, or lean gain.
- Target Heart Rate Calculator Find five training zones in bpm, including the fat-burn zone, with the Karvonen formula.
- Protein Intake Calculator Calculate daily protein grams and per-meal targets for fat loss, maintenance, or muscle gain.
- BMR Calculator Find your Basal Metabolic Rate with the Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas.
- Lean Body Mass Calculator Estimate lean body mass with the Boer, James, and Hume formulas, or exactly from body fat percent.
- Ideal Weight Calculator Compare the Devine, Robinson, Miller, and Hamwi formulas alongside the healthy BMI weight range.
- Calories Burned Calculator Estimate calories burned for 18 activities from MET values, body weight, and duration.
- Running Pace Calculator Solve pace, time, or distance with Riegel race predictions for 5K to marathon and split tables.
- Sleep Calculator Find the best bedtime or wake-up time by counting 90-minute sleep cycles, with hours by age.
- Ovulation Calculator Estimate your ovulation date and 6-day fertile window from your last period and cycle length.
Finance & Date Utilities
- Mortgage Calculator Estimate monthly payment and total interest for fixed-rate home loans.
- Compound Interest Calculator See compound growth with monthly contributions and a year-by-year balance and interest table.
- Loan Calculator Work out the monthly payment, total interest, and origination-fee effect for personal loans.
- Auto Loan Calculator Build the amount financed from price, tax, down payment, and trade-in, then get the payment.
- Savings Goal Calculator Find the monthly amount to reach a savings target on time, with milestone dates.
- Date Calculator Find days between two dates, or add and subtract days from any given date.
Gaming & Reaction Utilities
Tool Guides
Step-by-step tutorials and practical examples for each calculator and converter:
- All Guides
- Fast Photo Editor Guide
- PDF Converter Guide
- TXT to EPUB Guide
- TDEE Calculator Guide for Maintenance and Cutting
- What Is TDEE?
- TDEE Meaning
- BMR vs TDEE
- TDEE Formula
- Daily Maintenance Calorie Calculator Guide
- TDEE Calculator for Cutting and Weight Loss
- Weight Loss Calorie Calculator Guide
- Macro Calculator Guide
- Macro Calculator for Bodybuilders Guide
- Intermittent Fasting Meal Planner Guide
- Body Fat Calculator Guide
- BMI Calculator Guide
- Mortgage Calculator Guide
- Date Calculator Guide
- Reaction Time Test Guide
- Typing Speed Test Guide
- Random Team Generator Guide
- Water Intake Calculator Guide
- One Rep Max Calculator Guide
- Pregnancy Due Date Calculator Guide
- Keto Macro Calculator Guide
- Target Heart Rate Guide
- Protein Intake Guide
- BMR Calculator Guide
- What Is BMR?
- The Harris-Benedict Equation
- Lean Body Mass Calculator Guide
- What Is Lean Body Mass?
- Lean Body Mass vs Muscle Mass
- Ideal Weight Calculator Guide
- The Devine Formula
- Ideal Weight vs BMI
- Calories Burned Calculator Guide
- What Are METs?
- Calories Burned Walking
- Pace Calculator Guide
- Running Pace Chart
- Race Time Predictor
- Sleep Calculator Guide
- How Long Is a Sleep Cycle?
- How Much Sleep Do I Need?
- Ovulation Calculator Guide
- The Fertile Window
- When Do You Ovulate?
- Compound Interest Calculator Guide
- The Compound Interest Formula
- The Rule of 72
- Loan Calculator Guide
- How an Amortization Schedule Works
- How Is Loan Interest Calculated?
- Auto Loan Calculator Guide
- How Much Car Can I Afford?
- How Much Down Payment for a Car?
- Savings Goal Calculator Guide
- The 50/30/20 Budget Rule
- How Much Emergency Fund Do You Need?