Weighing Scales Confusion.

freehub

I was weighing myself last night, and at the start of the ride the scales said I was 11.13 stone and 14.5% bodyfat, after the ride I weighed myself again, and it said I was 11.8 stone and 13.8% bodyfat.

So I thought I'd convert this into KG as that's what I like to go by, only problem is I always thought I weighed 77kg, as sometimes I might weigh 12.1 stone, so I assumed I went from 11.3 to 12.1 stone, but that's a massive jump and quite abit extra weight, so what's going on?

Silly question but does a stone keep going up like 11.7,11.8 11.9,11.99, 12 etc..?

I dunno what I weigh now.

meanredspider

Presumably by 11.13 St you mean 11St13lbs?

freehub

Oh I see.

So is it normal to loose around 3kg and gain it through the course of a day?

So I weigh between 73 and 75kg.

nicklouse

so you are asking why you lost 5Lbs? (2.3Kg)

also if you work in Kg why not change the units on the scale?

briantrumpet

freehub wrote:

So is it normal to loose around 3kg and gain it through the course of a day?

I seem to vary between 71 & 74kg at random. Perhaps there is a pattern depending input of food and drink, and output of energy, sweat, and, erm, other things, but I've not worked out what that pattern is, if there is one. But it seems that our variation is similar.

One thing I've never done is work out the gross weight of food & drink I consume in a typical day. Has anyone done this for themselves? I would imagine that it's in the 5-10kg range, a high proportion of that being the weight of water, either taken as such or through liquid content of the food.

kevin69

i weigh a kilo or two less in the mornings.
i think its probably water loss overnight (through respiration).

Exercise can also lose me a kilo or so, so a long ride, starting early morning can leave my
three kilos lighter than just after a meal the previous evening.

so 3kg during a day sounds ok to me.


kevin

Stewie Griffin

Perhaps you did an unusually big poo that day.

nwallace

2 to 3 kg difference in a day for me too.

But I can also see that sort of difference from a pre-ride weigh in, post-rid and post shower, still using mechanical scales though.

I use my morning weight for logging.

cornerblock

Poo? Logging? This thread is going down the pan, back on topic, er I mean subject! Quite normal for weight to fluctuate during the course of the day.

Aggieboy

I love Will's posts. That is all.

garrynolan

freehub wrote:

I was weighing myself last night, and at the start of the ride the scales said I was 11.13 stone and 14.5% bodyfat, after the ride I weighed myself again, and it said I was 11.8 stone and 13.8% bodyfat.

So I thought I'd convert this into KG as that's what I like to go by, only problem is I always thought I weighed 77kg, as sometimes I might weigh 12.1 stone, so I assumed I went from 11.3 to 12.1 stone, but that's a massive jump and quite abit extra weight, so what's going on?

Silly question but does a stone keep going up like 11.7,11.8 11.9,11.99, 12 etc..?

I dunno what I weigh now.

If they're European (Lidl/Aldi) scales they don't measure pounds in increments of 1 to 14 - they use the decimal system. So... 11.5 stone = 11 stone 7 lbs etc. Possibly where the strange weight measurements come from?

Rigged

My weight regularly fluctuates by 2.5kg. As others have said it must just be down to what goes in and what comes out.

skyd0g

is density the same in Wistow?

finchy

Are you measuring on the same surface?

I weigh 13 st 6 lb in the bathroom and 14 st 1 lb in the living room.

freehub

I never would have thought different surfaces would make me weigh something different, although I can understand if I weigh myself upside down I could potentially weigh nothing.

finchy

freehub wrote:

I never would have thought different surfaces would make me weigh something different

Weigh yourself on a carpet and then weigh yourself on a hard surface. You'll see the difference.

freehub

Oh ya, I weight 11:4 on the carpet compared to 11:11 on a hard surface.

Aggieboy

johnfinch wrote:

freehub wrote:

I never would have thought different surfaces would make me weigh something different

Weigh yourself on a carpet and then weigh yourself on a hard surface. You'll see the difference.

Do they have carpet up North?

pastey_boy

Aggieboy wrote:

johnfinch wrote:

freehub wrote:

I never would have thought different surfaces would make me weigh something different

Weigh yourself on a carpet and then weigh yourself on a hard surface. You'll see the difference.

Do they have carpet up North?

yes , carpets and a sense of humour.

finchy

Aggieboy wrote:

johnfinch wrote:

freehub wrote:

I never would have thought different surfaces would make me weigh something different

Weigh yourself on a carpet and then weigh yourself on a hard surface. You'll see the difference.

Do they have carpet up North?

We northerners usually search in a skip and find a scrap to put on the floor of our outside toilet.

jim453

johnfinch wrote:

freehub wrote:

I never would have thought different surfaces would make me weigh something different

Weigh yourself on a carpet and then weigh yourself on a hard surface. You'll see the difference.

At the risk of confusing Will, I feel compelled to point out that his weight definitely is not variable depending upon the surface on which it is measured (in a uniform gravitational field such as the surface of the Earth). It would take a different strength gravitational field in order for it to alter.

Some scales will only operate on a hard surface due to the limitations of the instrument itself and so it is meaningless to use them under any other conditions.

Also, and to make it worse. The kilogram is a unit of mass not weight and is an absolute quantity which is independent of gravitational field.

I think.

finchy

jim453 wrote:

johnfinch wrote:

freehub wrote:

I never would have thought different surfaces would make me weigh something different

Weigh yourself on a carpet and then weigh yourself on a hard surface. You'll see the difference.

At the risk of confusing Will, I feel compelled to point out that his weight definitely is not variable depending upon the surface on which it is measured (in a uniform gravitational field such as the surface of the Earth). It would take a different strength gravitational field in order for it to alter.

Some scales will only operate on a hard surface due to the limitations of the instrument itself and so it is meaningless to use them under any other conditions.

Also, and to make it worse. The kilogram is a unit of mass not weight and is an absolute quantity which is independent of gravitational field.

I think.

I was just trying to keep it short and sweet.

Aggieboy

johnfinch wrote:

Aggieboy wrote:

johnfinch wrote:

freehub wrote:

I never would have thought different surfaces would make me weigh something different

Weigh yourself on a carpet and then weigh yourself on a hard surface. You'll see the difference.

Do they have carpet up North?

We northerners usually search in a skip and find a scrap to put on the floor of our outside toilet.

You nearly had me there until you mentioned you had toilets.

finchy

Aggieboy wrote:

johnfinch wrote:

Aggieboy wrote:

johnfinch wrote:

freehub wrote:

I never would have thought different surfaces would make me weigh something different

Weigh yourself on a carpet and then weigh yourself on a hard surface. You'll see the difference.

Do they have carpet up North?

We northerners usually search in a skip and find a scrap to put on the floor of our outside toilet.

You nearly had me there until you mentioned you had toilets.

Well, I say toilets, what I really meant was a hole in the ground.

deptfordmarmoset

johnfinch wrote:

Aggieboy wrote:

johnfinch wrote:

Aggieboy wrote:

johnfinch wrote:

freehub wrote:

I never would have thought different surfaces would make me weigh something different

Weigh yourself on a carpet and then weigh yourself on a hard surface. You'll see the difference.

Do they have carpet up North?

We northerners usually search in a skip and find a scrap to put on the floor of our outside toilet.

You nearly had me there until you mentioned you had toilets.

Well, I say toilets, what I really meant was a hole in the ground.

But that's a mine!

rake

bathroom scales are very inaccurate by cheap design, i know this from seeing inside my old busted set, it had a digital display too with electronic quantum tunneling sensor pad but that meant nothing because its not paticularly temperature stable and was linked mechanically by one of the cheapest and crappest linkages i have seen.. It annoys me when someone claims their bike weighs 6.89kg after putting it on the scales. they can be affected by the angle you stand at and the position of the weight. As for on the carpet its probably because the weight is spread differently and flexes the casing.

bompington

I can lose 2-4lbs by leaning slightly to the left on my scales, also if I step on them very gently that seems to keep another pound or two off.
With uncharacteristic self-discipline I have, over the years, conditioned myself to believe the highest they read.