Is the result an estimate?

Yes. Calculations follow official formulas and standards, but results should be used as reference. For financial or regulatory decisions, consult a professional.

Does it work offline?

After loading the page once, you can continue using the tool offline. Calculation does not depend on an external server.

Can I trust the numbers?

The formulas follow recognized standards. Differences from manual calculations usually come from rounding or unconsidered parameters — always check the calculation memory.

Calculation is executed locally in your browser. For full details on data handling — including cookies, paid plan authentication, and analytics — see our Privacy Policy.

Is there a usage limit?

The free plan has a daily usage limit per tool. Pro and Max plans remove the limit.

Can I share the result?

Yes. Most tools offer the option to copy a summary, export as CSV, or share via WhatsApp.

Utilities

1RM & Ideal Load Calculator

Find out your true 1 Rep Max (1RM) strength without getting injured. Create your training base table (50% to 95%) and evaluate your relative strength.

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1RM and Ideal Load Calculator

Classic formulasOn-device processing

Estimate your 1RM, translate it into training load, and build the right bar without leaving your browser.

1RM

112.5 kg

Ideal load

85 kg

Goal

Strength

Warm-up

35 kg

Effort baseline

Load and reps

Load lifted

Reps

Unit and goal

Unit

Goal

Calculation formula

Formula

Zones and ideal load

Intensity zones

100%

112.5 kg

1 reps · Peak

95%

107.5 kg

2 reps · Max strength

93%

105 kg

3 reps · Max strength

90%

102.5 kg

4 reps · High strength

87%

97.5 kg

5 reps · Base strength

85%

95 kg

6 reps · Base strength

Prescription and warm-up

Ideal load

85 kg

Strength · 3-6 reps · target at 85% of training max.

Entry

35 kg

8 reps · 40%

Progression

47.5 kg

5 reps · 55%

Approach

60 kg

3 reps · 70%

Pre-set

72.5 kg

1-2 reps · 85%

Advanced readout

Formula comparison

Estimates by formula

AutoActive

112.5 kg

Epley

116.7 kg

Brzycki

112.5 kg

Lander

113.7 kg

Lombardi

117.5 kg

Relative analysis

Bodyweight

Reverse load (%)

Relative score

1.37x

Load by target

92.5 kg

Bar and export

Plate breakdown

Bar weight

Plates per side

25 kg

1 per side

10 kg

1 per side

1.25 kg

1 per side

Sobre

What is the 1RM & Ideal Load Calculator?

Por Quorify EditorialAtualizado em 3 de junho de 2026

Quorify's 1RM & Ideal Load Calculator helps you discover your true maximum strength for 1 Rep Max (1RM) without risk of injury. Create your baseline training table (50% to 95%) and assess your relative strength. Calculations happen locally in your browser, meaning the values you enter are processed on your own device. The tool was designed with real-world scenarios in mind — personal use, professional applications, and quick comparisons. Results are displayed with detailed calculation memory, making manual verification easy when needed. Part of Quorify's utility suite, integrated with other calculators and conversion tools. Values presented are estimates based on official standards — differences with manual calculations or specific tables may occur depending on context. For details on data handling, please see our Privacy Policy.

Casos

When to use

Solve a quick calculation without opening a spreadsheet or external calculator.
Verify a result obtained from another tool or manual calculation.
Compare scenarios by quickly changing input parameters.
Present standardized results in conversations with clients, HR, or accountants.
Track the evolution of a metric over time by saving results in series.

Método

How it works

The 1RM & Ideal Load Calculator applies recognized mathematical formulas for the proposed calculation type. When applicable, it follows official Brazilian standards (Inmetro, gov.br) or international standards (ISO, ITU). Processing happens in your browser, making it fast with no server latency. Results are estimates — for critical financial or regulatory decisions, always consult a qualified professional.

FAQ

Frequently asked questions

Is the result an estimate?: Yes. Calculations follow official formulas and standards, but results should be used as reference. For financial or regulatory decisions, consult a professional.
Does it work offline?: After loading the page once, you can continue using the tool offline. Calculation does not depend on an external server.
Can I trust the numbers?: The formulas follow recognized standards. Differences from manual calculations usually come from rounding or unconsidered parameters — always check the calculation memory.
Is my data saved?: Calculation is executed locally in your browser. For full details on data handling — including cookies, paid plan authentication, and analytics — see our Privacy Policy.
Is there a usage limit?: The free plan has a daily usage limit per tool. Pro and Max plans remove the limit.
Can I share the result?: Yes. Most tools offer the option to copy a summary, export as CSV, or share via WhatsApp.

Mais

Related tools

Fontes

Official sources

Tabelas, leis e referências consultadas para fundamentar esta ferramenta.

Official standardCurrentInmetro · National Institute of Metrology
International System (SI) measurement standards
Brazilian official system of units of measurement — foundation for any conversion, calculation, or technical measurement tool.
Consultar fonte oficial
Official referenceCurrentNational Observatory
Official calendar and date standards
Brazilian reference for official time zone, civil calendar, and daylight saving time standardization — foundation for temporal calculations.
Consultar fonte oficial
International standardISO 8601:2019ISO · International Organization for Standardization
ISO 8601 — Date and time format
International standard for representing dates, times, and durations — adopted in APIs, databases, and web protocols worldwide.
Consultar fonte oficial

Metodologia — esta ferramenta consulta as tabelas e legislação vigentes nas fontes acima. As regras são atualizadas conforme novas instruções normativas são publicadas pelos órgãos competentes.

Última verificação editorial: junho de 2026.

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1RM & Ideal Load Calculator