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Health & Wellness
Open tool Swimming Pace Calculator
Create a bounded, browser-local swimming pace calculator with visible assumptions, review guidance, and downloadable output.
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Calculators
Open tool Swimming Split Calculator
Create a bounded, browser-local swimming split calculator with visible assumptions, review guidance, and downloadable output.
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Health & Wellness
Open tool Symptom Journal Template
Create a bounded, browser-local symptom journal template with visible assumptions, review guidance, and downloadable output.
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Math, Statistics & Probability
Open tool T-Test Calculator
T-Test Calculator with visible formula, field hints, and browser-local calculation.
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File Converters
Open tool TAR Extractor
Extract bounded regular TAR entries with checksum, expanded-size, type, and path safeguards.
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Calculators
Open tool Target Heart Rate Calculator
Estimate an adult Karvonen exercise heart-rate zone.
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Calculators
Open tool Tax Bracket Calculator
Estimate tax at one entered marginal rate after deductions.
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Calculators
Open tool Tax Withholding Calculator
Estimate per-pay-period withholding from annual tax.
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Calculators
Open tool TDEE Calculator
Estimate daily energy needs from body size, age, sex, and activity using Mifflin-St Jeor.
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Finance & Business
Open tool TDS Estimate
Estimate Indian withholding arithmetic from rates selected and verified by the user.
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Enterprise IT
Open tool Technology Roadmap Builder
Create a bounded, editable technology roadmap builder from supplied enterprise IT data with transparent rules and operational safeguards.
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Enterprise IT
Open tool Technology Vendor Scorecard
Create a bounded, editable technology vendor scorecard from supplied enterprise IT data with transparent rules and operational safeguards.