Is Siduri “Hebrew Ordinal”?

Yes — that English label means the same 1–22 position map on this site.

Why is shin 21 in Siduri but 300 in Hechrachi?

Different charts. Position versus place-value hundreds.

Do finals jump to 500–900 in Siduri?

No. Finals share the base letter’s index. Large finals are Mispar Gadol.

Can חי be 18 in both Siduri and Hechrachi?

Yes for that pair (8+10). Do not assume every word matches across systems.

Where is the live Siduri tool?

Mispar Siduri (Hebrew Ordinal) Calculator page.

Hebrew guide

Mispar Siduri Explained

Ordinal thinking applied to the aleph–bet: aleph=1 through tav=22.

Read time: 8 min
Supports: Mispar Siduri
Updated: 3 September 2026
Next step: Open Siduri calculator

By Abdullah · Web Developer

Independent guide · Disclaimer

Open Siduri calculator Hebrew suite

This article supports the Mispar Siduri. It does not replace that page — use the links below when you are ready to calculate or read the core guide.

Positions 1–22

Mispar Siduri numbers each Hebrew letter by order in the aleph–bet: aleph=1, bet=2, … tav=22. Final forms share the base letter’s index (final kaf = 11, like kaf).

Vs Mispar Hechrachi

Hechrachi uses 1–9, 10–90, 100–400. Shin is 300 there and 21 in Siduri. Same alphabet, different map. English Ordinal is the Latin cousin of this idea (A–Z 1–26), not the same chart.

חי and אב

חי Siduri: ח=8 + י=10 = 18. Hechrachi is also 18 for this pair. אב Siduri: א=1 + ב=2 = 3; Hechrachi א=1 + ב=2 = 3.

Finals are not Gadol

Siduri does not raise finals to 500–900. That is Mispar Gadol. If your total jumps by hundreds when a sofit appears, you are on Gadol — see Gadol vs Hechrachi.

Frequently asked questions

Is Siduri “Hebrew Ordinal”?
Yes — that English label means the same 1–22 position map on this site.
Why is shin 21 in Siduri but 300 in Hechrachi?
Different charts. Position versus place-value hundreds.
Do finals jump to 500–900 in Siduri?
No. Finals share the base letter’s index. Large finals are Mispar Gadol.
Can חי be 18 in both Siduri and Hechrachi?
Yes for that pair (8+10). Do not assume every word matches across systems.
Where is the live Siduri tool?
Mispar Siduri (Hebrew Ordinal) Calculator page.

Conclusion

Live Siduri: Mispar Siduri Calculator. Suite: Hebrew Gematria Calculator.