rmcalculator.com

.com crawl

First seen 2026-04-15 · Last seen 2026-05-16 · ok HTTP/1.1 200 2634 ms crawled 2026-05-10

US · 162.248.227.122 · AS14576 Hosting Solution Ltd.

Reputation 100/100

sector health type homepage

HTML metadata

Title

RM Calculator | One repetition max calculator

Description

Calculate your one repetition max (1RM) for squat, deadlift, bench press, pull up, tricep dips and muscle up. Everything you need to find your One Rep Max.

Language

Canonical

https://rmcalculator.com/en/

Translations

Open Graph

url: https://rmcalculator.com/en/
title: RM Calculator | One repetition max calculator
site name: RM Calculator
description: Calculate your one repetition max (1RM) for squat, deadlift, bench press, pull up, tricep dips and muscle up. Everything you need to find your One Rep Max.

Technology

Server: nginx
CMS: Gatsby

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (7)

cdn.jsdelivr.net×2
fonts.googleapis.com×2
c.ndtvimg.com×1
cdnjs.cloudflare.com×1
code.jquery.com×1
fonts.gstatic.com×1
www.googletagmanager.com×1

Registration

Registrar

Gransy, s.r.o.

Created

2022-11-01

Expires

2026-11-01 166 days left

Updated

2025-10-28

Name servers

ns.gransy.com
ns2.gransy.com
ns3.gransy.com
ns4.gransy.com
ns5.gransy.com

DNS records live

NS

ns.gransy.com
ns2.gransy.com
ns3.gransy.com
ns4.gransy.com
ns5.gransy.com

Email authentication no MX

SPF: not published
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-03-12 to 2026-06-10

Expires in 22 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 55/100 Checked live page: https://rmcalculator.com/en/

present

x-frame-options
x-content-type-options
referrer-policy
cross-origin-opener-policy

findings

missing HSTS
missing Content Security Policy
missing Permissions Policy

Header values

referrer-policy: same-origin
x-frame-options: DENY
x-content-type-options: nosniff
cross-origin-opener-policy: same-origin