Topic summary

Coming back to: Feature request: should a dose-equivalence tool exist at all?

Data & Tools › Calculators syringe units concentration maths worked example site feedback Solved

This is a generated summary. It shows the 6 most-liked posts from a topic of 42, in their original order, with the accepted answer included where one exists. It is a reading aid and it will miss nuance — the full topic is the record.

s.demirTL213 Nov 2025 · edited#7

Reading back through the Feature request threads from last year, the same three questions come up every time and only one of them has ever been answered properly. That seems like a documentation gap rather than a knowledge gap.

27 likes 8mo

o.pasqualeTL1Member Solution17 Nov 2025#10

Post #8 is the version of this I will quote in future. One addition.

Do the arithmetic by hand the first few times, whatever tool you use afterwards. A calculator with a wrong input gives a confident wrong answer and there is nothing in the interface to tell you.

That is what the documentation says. What happens in practice is usually close.

7 likes 8mo

m.eriksenTL230 Nov 2025 · edited#23

If a tool asks for a value you do not have, the honest response is to find the value rather than to estimate it. Estimated inputs propagate silently.

26 likes 8mo

l.lundgrenTL26 Dec 2025#30

This follows post #29 rather than contradicting it.

Units: all calculators explicitly require units to be stated. This prevents the decimal-point errors that come from forgetting units. Always verify units in and out.

On reflection I would soften that slightly.

27 likes 8mo

PSundbergTL2Member9 Dec 2025#33

h.amankwah, post #24: Narrowing post #21, because the general version has more than one answer. Offline use: all calculators are written in JavaScript and can be downloaded and run offline if desired. They do not require internet connectivity to function. Not the answer, but possibly the question that gets there. Go to post

Post #32 answers the question as asked. The question underneath it is different.

Do the arithmetic by hand the first few times, whatever tool you use afterwards. A calculator with a wrong input gives a confident wrong answer and there is nothing in the interface to tell you.

28 likes in reply to #24 8mo

c.chowdhuryTL216 Dec 2025#42

If a tool asks for a value you do not have, the honest response is to find the value rather than to estimate it. Estimated inputs propagate silently.

24 likes 7mo

Read the full topic (42 posts)

Suggested topics

Topic	Participants	Replies	Views	Activity
Follow-up: Why the titration planner refuses to produce a schedule below a floor Data & Tools › Calculators worked example syringe units site feedback The question in the title: Why the titration planner refuses to produce a schedule below a floor I will give what I have already checked below so nobody repeats it. A follow-up question about titration…	+120	146	14k	10mo
Validating a calculator against hand arithmetic — what changed since Data & Tools › Calculators concentration maths site feedback worked example Solved Posting this under the heading it deserves: Validating a calculator against hand arithmetic — what changed since Everything below is what sits behind that. What changes if the standard account of Validating a…	+121	137	21k	13mo
Second pass at: The storage lookup and where its data comes from Data & Tools › Calculators concentration maths syringe units site feedback worked example On the subject in the title: Second pass at: The storage lookup and where its data comes from Working notes rather than a conclusion. Two things I would like separated before anyone answers on storage lookup,…	+38	42	13k	19d
Validating a calculator against hand arithmetic Data & Tools › Calculators syringe units concentration maths worked example Solved Validating a calculator against hand arithmetic Writing it up because I had to work it out twice and would rather nobody else did. Validating a calculator against hand: setting out the arithmetic in full,…	+17	21	12k	3mo
About the Calculators category Data & Tools › Calculators worked example concentration maths syringe units Pinned Wiki Reconstitution, dose equivalence, titration planning, mass-error checking and storage lookup. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with…	+2	7	733	5mo

Related topics — sharing the tags syringe units, concentration maths, worked example

Topic	Participants	Replies	Views	Activity
Trust level 3 requirements: a clarification Meta › Announcements guidelines site feedback moderation Trust level 3 requirements: a clarification — setting out what I have, and where I think it stops being reliable. Trust level 3 requirements, and specifically the version of it that the documentation does not…	+10	14	7k	9mo
Choosing a concentration on purpose rather than by accident Practice › Reconstitution concentration maths worked example syringe units Solved On the subject in the title: Choosing a concentration on purpose rather than by accident Working notes rather than a conclusion. Working notes on choosing a concentration rather than a conclusion. I would…		2	719	1mo
Coming back to: How much context is too much context in a first post? Start Here › How to Ask beginner friendly site feedback worked example onboarding Asking directly, because I could not find a straight answer: How much context is too much context in a first post? Counting it rather than describing it, because the count is the part that can be argued with.…	+2	6	7.5k	1d
Designing a personal experiment that could change your mind — one year on Research Methods › N-of-1 designs effect size data table worked example Designing a personal experiment that could change your mind — one year on — setting out what I have, and where I think it stops being reliable. Two things I would like separated before anyone answers on…	+74	80	17k	2d
Why "any advice?" is the least effective ending for a post Start Here › How to Ask worked example guidelines site feedback beginner friendly The question in the title: Why "any advice?" is the least effective ending for a post I will give what I have already checked below so nobody repeats it. Counting it rather than describing it, because the…	+113	126	55k	20mo